In the recent weight vs. weightlessness post, there was an interesting comment. Michael Maher asks: My question is this: What forces did the astronauts experience as they were in transit to the moon?

Upcoming experimental tests of gravity’s quantumness aim to resolve one of the biggest questions in physics, but theorists ...

Thought experiment...if you built a bedroom sized room at the center of the Earth, and you are in that room, which way is down? Please explain to me why if you are surrounded by the same amount of ...

The satellites moved in tandem (one behind the other) around Earth, and researchers measured the distance between the two ...

What is gravity? Is it a force, a pseudo force, or something else? This question is being debated vigorously by physicists since 2015, the 100th anniversary of Einstein's Theory of General Relativity.

Dark matter is considered the invisible force that holds everything together in the universe, preventing materials from drifting apart, but what if this could be explained in a simpler form using ...

Our universe would look so different, Kyle. You might not recognize it even if you could be here to see it. Unfortunately, there probably wouldn’t be a whole lot to see. I learned about this from ...

WASHINGTON, D.C. – The first-ever detection of gravitational waves, which scientists could announce Thursday, would open a new window on the universe and its most violent phenomena. Scientists will ...